Portable stove



y 1948- s. T. HOWARD 4 2,444,444

PORTABLE STOVE Filed April 17 1944 2 Sheets-Sheet 1 Patented July 6,1948 UNITED STATES PAT- L t k Howard, Jeifer s onvjillle, t ApplicationAprilll, 1944, SerialNo.f531, 143

. waned und rj the a me 5 3mm 7 The. invention described 1 herein if;patented, may be manufactured and fused by or j for the Government forgovernmental purposes without the payment to ine ofhany"royaltylthereon. r

The invention relates to a single burnerfgas oline cook-stove in whichthe fuel is vaporized in a fuel tank. surroundin the burner, and heVapor transmitted to the burner jet ,withontf further heating; j j f.Q-Q

The invention has (particular value-in connec tior fwith the provisionof] heating unitgfer small detachmentsjof the armed fc irces of theUnited States. Ev'enla singleflfire unit of the gasoline fieldrangeM-37, as shown in" myQP-ateritjNp.

2,331,913, October 19, 1953,} Fire; emit; carrying case andheater, isnot adapted fortraneportation byhandjan'd useby sceuting; skiing phlparat ouper groups. The portable singlejburn'erstove needed for use unitsand also for individuals must have no complicated or easilyldisorderedparts, be rugged in construction, quick, sure and safe in use, as lightin Weight as possible and e'asilypackedand carried. V a It isthereforean objectof this inyentijonjto provide a single burner gasolineLsteve' which can be readily transported by individual soldiers andother members offlthe armed forces and" usedjte heat food or-waterquickly and eificiently jwithi out danger bf accidlltpli ofthetstovefailing to work through someinjuryfmaladjustmentfp posure toadverse oonditions I I I Y1 Itis' a'further object of r theinyentipnjto' ro vide a'compact stove unit comprising?! ody rotatablymounted on a "base, whereinthe burner valve is controlled "by the bodyand thebase. H; W v

It 1 further ec if h inv jiien b P 9 means'for handling thefstove whenitfish nd rotating the parts, which 'means constitute operating wrenchesfor efiecting' qothe'r'lj adjust mentsand operations, in connectionwiththe Furtherpbjeots drum inyention willbe a parent froma; considerationof the ens ing d scription taken in connection'Ywith thefac'c payingdrawings, when: t t; *Fig; 1 is a perspectivewiew f the assembled stovewith-the operating wrenches ny osmen e serveas handles for the stove. r

Fig.2 is an explodedviewof'thestove "he Wing from top to bottom; thedetachable b'urherjt be; the stove body com osed of'fafuel tank arildpot sup drtg "the' burner valve and" the detaeha blte base. i 1 Fig.3-is' a verticalsectional view through the relative rqtatioii petweea192s; 370 -o e. 757

of March 3, 1883, as"

stovein the plane of the filler inlet,1showing the windscreen in place.

A t W e a perspective View of the windscreen. tIn Fig. l the body of thestove is designated A and comprises, as shown more particularlyin Fig.3,a spherical fuel tank Hi having passage means therethroughfnaniely acylindrical tube H ex:- tending through the center from toptob ottom andhaving both ends open. The tank ID has a uerpp ning including afunnel-shaped inlet 12 and a closureseat I 3, ,The inlet is closed by ascrew plug l4 carrying a closure disk I 5 which :fits tightly againstthe seat l3 and is secured to the plug l t by means of a spl t pin I 6.The plug l4 isbroache'd at l1 to receive the polygonal wrench l8forrernoving and inserting it. The spherical tank lfl also carries apotsupport l9 formed ofia plurality of bars welded to the body and re nsforced and secured together by a ring 2 I." v Th'e burner assembly 22Yislocated centrally or thejcylindrical tube l land spherical tank lq andis's'upported on a fitting 23 permanently secured in the sidewall ofthefcylindrical tube I I at 24 by brazing or other appropriate means;Thefitting 23 is hollow and terminates within thetank inthevapor inletpipe 25, which extends to the upper part ofthetank and is surrounded byaspaced sleeve 26; Within the tube I I thefitting 23 carries a verticaltubular or sleeve portion 21 whichjis also broachedtoj receive thewrench lfl, Thelowerportion 0f the sleeve 21 is shaped to receivethe"flame qr burner valve 29 which'is threaded into the sleeve" foradjustment" at. 3! and Which thasa packing tightened by the nutjl, I Theflame valve, asshown pmo're particularly in Fig. 2, consists of a'cylindrlcal stern portiqn 32, athreaded portion 33 engaging the threads39 offthe sleeveZl, the needle valve 34 anda TeheaId or handle 35, Thereis inserted in the uppenlpart oi the'cylindrical tubellabovetheburnerassembly'a removable burner tube 36 having a flared top 31and a flame spreaderiifl 'securedwithin and slct. The protuberances 39on the cylindrical wall of thebu r'ner tube 36 serve to secure theburner tube within the tanktube llby friction and t0 spacethe burnertube from the tahkhddY to'provi de a uniform blanket of airaround theburner "tube, thus preventin overheating of 1 the gasoline."

if The" baselB of the stove comprises seams} hemispherical base member40. having arr nge 4,! extending fromits bottom to furnish a morsecuresupportfor thestove. A tube 411s" at:

threaded at thetop to receive the burner jet 2a, a

tached to the top of the member 40 by a, flange 43, and extends upwardlyto form a portion 44 of somewhat smaller diameter to be inserted in thetube l l of the stove body to support the body on the base. The portion44 of the tube 42 is slotted at diametrically opposite points 45 toreceive the extremities of the T-head 35 of the burner valve. A primingpan 46 of cup shape is secured to the base by the flange 43 whichsecures the tube 42 to the base member 40. Around the periphery of thebase member 40 is provided a series of air vents 4'8, and on theexterior of the base there is an annular sleeve or shutter 48 rotatablymounted and having a series of apertures 49 which may be made toregister partly or completely with the apertures 41 of the base member40 to control the air supply to the burner. Lugs 50 are provided on theshutter formoving it relatively to the base. The base B is also providedwith lugs on the flange 42 to be engaged bythe engineers wrench 52,which is employed to remove or adjust the packing nut 3! as well as fora handle for the base B. A wind screen 53 composed of twosemi-cylindrical members hinged at 54 and having a series of air vents55 is provided to enclose the stove when used in windy or stormyweather, particularly to confine the heat from the priming chargeclosely around the fuel tank; the screen is apertured to accommodateprojecting filler plug I4 on rotatable tank A (see Fig. 3). The wrenchesi8 and 52 are secured to the pot support by chains 56 and 57 whichprevent their loss but permit their use in each of the relationsdescribed.

To operate the heater the userrshouldproceed as follows:

Lift the body A from the base B and remove the filler tube plug I4 fromthe tank filler opening, being sure the polygonal wrench i8 is insertedall the way. See thatthe flame valve 29 is closed, hold the tank H! withthe filler tube funnel l2 upward and fill with gasoline until it islevel with the opening when the tank is in vertical position. Pour intothe priming cup 46 enough gasoline to heat the tank. In warm weatherabout half the amount the priming cup will, hold will be enough. Set thetank 60 on the base B with the flame valve stem handle 35 entering theslots 45 in the tube 44. Insert the long end of the polygonal wrench [8in the filler tube plug l4. and place the engineers wrench 52 on one ofthe lugs 5| on the base flange 4!. Close the air holes t'l in the baseby rotating the shutter 48; set fire to the gasoline in the priming cap.If wind interferes set the shield 53 around the stove. Immediately afterthe priming gasoline has burned out open the flame valve 29' about onequarter turn by rotating the tank I'D counter-clockwise and immediatelyapply a match to the slot in the burner tube 35. When the flame formsinside the burner tube open the air shutter 48. to give the. type offlame desired. To stop the flame rotate the tank clockwise until theflame valve 29 is closed. The heater should be cooled before refilling.

From the foregoing description it will be seen that theusual gasolinestove construction has been greatly simplified. By vaporizing the entirefuelsupply in the fuel tank, applicant has been enabled to omit both thevaporizing means in the fuel line and the means to place the gasoline inthe tank under pressure. By locating the burner within the fuel tank,direct heat for vaporizing the gasoline is supplied, which is asimpler-and cheaper construction, and not dangerous in so smalla stove.The spherical shape of the. tank furnishes a construction sufficientlystrong to withstand the pressure of the vaporized gasoline with aminimum of weight, and at the same time it provides a strong body forthe stove, which carries the pot support and protects the burner frominjury caused by rough contact with other objects.

Since the tank I0 is filled approximately half full, space above thegasoline for the vaporized fuel is provided and the burner inlet drawsthe vapor from the upper part of this space Where it is hottest. Theinlet tube 25 is insulated by the jacket 26 to prevent condensation ofthe vapor before it reaches the burner jet.

By arranging the burner valve 29 so that it is operated by rotating thebody A on the base B, and by providing inlet plug M on body A with asocket I! (see Figure 3) to receive removable polygonal wrench I8, Iavoid the necessity of having a valve handle projectin from the tankwhere it would be heated by the burning of the priming charge, and it istherefore possible to placethe priming cup 46 directly below the fueltank l0. By placing the priming cup lfidirectly below fuel tank H], amaximum amount of heat is delivered to the contents f the tank byburning the priming charge, which results in vaporization of the fuel inthe tank and ignition of the heater. It is particularly important thatthere should be no uncertainty in the lighting or operation of the stovewhen it is used under war conditions. especially in winter or in theextreme North. By. the use of the necessary wrenches as detachablehandles for the body A and base B, the entire device is reduced to aminimum number of parts with nothing likely to be lost and the wholecapable of being packed within a cylindrical container of substantiallythe same dimensions as the width of the base and the height of thestove.

Having thus described my invention, what I claim is:

1. A liquid-fuel burner comprising a fuel tank rotatably supported on abase, a flame valve carried by said base, a, burner jet mounted on saidtank in non-rotatablev relation therewith, means for relatively rotatingsaid tank and said base, and mean-s to move said valve into and out ofclosing relationship with said burner jet as a result of the rotativemovement of said tank on said base.

2. A liquid-fuel. burner comprising a fuel tank rotatablysupported on abase, a flame valve carried by said base, a burner jet mounted on saidtank in non-rotatable relation relative to said tank and surrounded bysaid tank, means for relatively rotating said tank and. said base, andmeans to move said valve into and out of closing relationship with. saidburner jet as a result of the rotative movement of said tank on saidbase.

3. Aliquid-fuel burner comprising a fuel tank rotatable on a base, aburner jet mounted on said tank in non-rotatable relation therewith, aflame valve in operable relation with said burner jet, meansforrelatively rotating saidtank and said base, and mean-s to move saidflame valve into and out of closing relationship with. said burner jetas a result of the rotative movement of said tank on said base.

4. A liquid-fuel burner comprising in combination a base, a. fuel tankrotatable on said base, a burner jet. mounted on said tank innon-rotatable relation therewith, a flame valve carried by said base,said burner jet and flame valve being in operablerelation with each.other, means for relatively rotating said tank and said base, and meansto move said flame valveinto and outof closing relationship withsaidburnerjet as, a result of the rotative movement of said tank onsaidbasepq a 5. ,A liquid-fuel stove comprising :a fuel tank having aburner mcuntedon said tank in nonrotatable relation therewith, and abase, the tank beingrotatablymountedon the base, the burner having aflame valve, said flame valve and said base being interconnected wherebythe valve is operated when the tank and base ararotatedrelative to eachother, and means mounted on said tank to support a vessel above saidburner.

6. A liquid fuel stovecomprisinga'base carrying a flame valve, a fueltank having tubular vertical passage means therethrough and a; burnerjet mounted within said passagemeans innonrotatable relation with saidtank. and in operable engagement with said flame, valve, said burnerjet: comprising a fitting havingan inletdirectly connectedttosaidpassage-means, said fuel tank being rotatable on said base andoperatingsaid burner jet by rotation relative, to said base.

7. A liquid-fuel stove comprising a burner, a fuel tank surrounding theburner and heatable thereby, and a base having means for supporting theburner and tank, saidJtank and burner being in non-rotatable relationrelative to each other and rotatable together on said base, and a flamevalve in operable relation with said burner and non-rotatably associatedwith said base, whereby the valve is operated by rotating the tank withthe burner on said base.

8. A liquid fuel stove comprising a fuel tank having a burner mountedthereon and a base, the tank being telescopically and rotatably mountedon the base, the burner having a flame valve, said valve and said basehaving inter-engaging means whereby the valve is operated when the tankand base are rotated relatively to each other.

9. A liquid fuel stove comprising a tank, a burner mounted thereon, anda base having an upstanding flange on which the tank is rotatably andremovably mounted, said flange having oppositely placed notches and saidburner having a valve with a stem having a T-head received in saidnotches, whereby the burner valve is operated by rotating the tank andburner on the base.

10. A stove comprising a spherical fuel tank having a cylindrical tubeextending through its center and having a, fuel inlet line entering thetube from the tank approximately midway of the tube and terminating in aflame valve and burner jet, a removable burner tube in the upper end ofsaid cylindrical tube and a removable base engaged in the lower end ofsaid cylindrical tube, said cylindrical tube being freely rotatable onthe base, and the flame valve being provided, with means engaging thebase detachably and nonrotatably.

11. In a liquid fuel cooking stove, a substantially spherical fuel tankhaving tubular passage means through its center, terminating at the topin a flame slot and at the bottom in a hollow hemispherical base havingvalved air openings, and a burner located substantially midway of saidpassage means through said tank and having a flame valve and a fuelinlet leading to the upper part of the tank, whereby the fuel isvaporized in the tank and supplied therefrom directly to the burner, thetank with the burner being rotatable n the base and the burner valvebeing nonrotatably engaged with the base, and being operated by relativerotation between the base and tank. 11 I l 12. A liquid fuel stovecomprising a stovebody including a, not support and. a burner havingv aflame valve with adownwardly extending stem, and a base on which thebodyis rotatably mounte ed, said valve stemand; said base being nonrotatablyengaged, andthe body and basebeing provided with. means :engageable by:wrenches which form handlesfor rotating the body onthe' base to controlthe flame valve. 1,, 1 I 13. A stove havingabcdy portion comprisingasubstantially spherical fuel tank having a burner, centrally locatedtherein, the burnerhavinga flame valve with a downwardly extending stem,and a base on which said body portionis detach-3 ably and rotatablymounted, saidstem engaging: said base, detachablybutpnon-rotatably, saidtank having an inlet provided witha plugahaving, a recess to Y receive awrench and saidubase having wrench engaging lugs, and two wrenchessecured: to the st-oveby flexible connectionsfor engaging the, stovebody and basewhen they'are hot to' close the flame valveby rotating thebody onthe base. 1 3i .14. A stove lcomprisingga vfuel tank having eatube extending vertically therethrough and ahfiN-i ing a fuel inlet lineentering said tube from said tank and terminatinglin a burner jet,aremovab'lev base engaged in the lower end of said-tuba-said tube beingfreely rotatable on said base, and a flame valve in operable relationwith said burner jet and provided with means for engaging said basenon-rotatably.

15. A liquid-fuel cooking stove, comprising a fuel tank having verticaltubular passage means therethrough, said tubular passage meansterminating at the top in a flame slot and at the bottom in a hollowbase having valved air openings, and a .burner having a, burner jetlocated within said tubular passage means, said burner having a fuelinlet passing directly from the burner jet through said tank andcontinuing within said tank to the upper part of said tank, and a, flamevalve in operable relation with said burner, said tank with said burnerbeing rotatable on said base, and said valve being non-rotatably engagedwith said base and operated by relative rotation between said base andsaid tank, whereby fuel is vaporized in the tank by heat exchange fromsaid burner and supplied from said tank directly to the burner.

16. In a liquid-fuel stove, the combination of a fuel tank havingtubular vertical passage means therethrough, of a base carrying a flamevalve and supporting said tank rotatably, and of a burner, said burnercomprising a, burner jet mounted within said tubular passage means innon-rotatable relation relative to said tank and in operable engagementwith said flame valve,.

said burner having an inlet tube extending into the tank and upwardlywithin the tank to a point adjacent the top, said burner operating toheat and vaporize the fuel in the tank, said flame valve being operatedby rotating said tank relative to said base.

17. A stove comprising a fuel tank having a tube extending therethnoughand having a fuel inlet line within said tank entering said tube fromsaid tank, a burner jet fitting mounted on said tube in non-r0tatablerelation relative to said tank and receiving the said fuel inlet linedirectly, a removable burner tube in the upper end of said first-namedtube, and a removable base engaged in the lower end of said first-namedr a tube, aid base carrying a flame valve in operable engagement withsaid burner jet, said tank being rotatable on said base and operatingsaid flame valve by rotation relativetosaid base.

18. A liquid-fuel stove comprising a fuel tank having a burnernon-rotatably mounted thereon, and a base, the tank being rotatablymounted on the base, a flame valve in operable engagement with saidburner, said valve and said base being interconnected, whereby the valveis operated when the tank and base are rotated relative to each other,and socket means on said tank for removably inserting therein handlemeans for rotating said tank.

19. A liquid fuel stove comprising a fuel tank having a burnernonwrotatably mounted thereon, a base, said tank being rotatably mountedon said base, a flame valve in operable engagement with said burner,said valve and said base being interconnected, whereby said valve isoperated by relative rotation of said tank and base, a projection onsaid tank for rotating said tank, and a screen positioned on said base,said screen being apertured to accommodate said projection.

20. A liquid-fuel stove comprising a fuel tank having a burner mountedthereon, and a base, the tank being rotatably mounted on the base, theburner having a, flame valve, said valve and said base beinginterconnected, whereby the valve is operated when the tank and base arerotated relative to each other, socket means on said tank adapted toreceive handle means for rotating said tank, and a windscreen positionedon said base so as to surround said tank, said shield being aperturedfor removably inserting handle means into said socket means to rotatesaid tank without removing said windscreen.

STYLES T. HOWARD.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 663,160 Dunlap Dec. 4, 1900694,173 Newbold Feb. 25, 1902 1,281,345 Goldberger Oct. 15, 19181,500,962 Slezinsky July 8, 1924 2,120,078 Schrader June '7, 19382,335,096 Anderson Nov. 23, 1945 2,350,860 Anderson June 6, 1944 FOREIGNPATENTS Number Country Date 3,582 Sweden May 11, 1892 14,256 GreatBritain 1895 48,748 Austria June 26, 1911 142,976 Austria Oct. 10, 1935

